【Suitable for different watch covers】 - Watch case opener is used for watch cases with grooves, watch case opener lever is used for watch caseWith a lever opening, the screwdriver is used to fix the watch case by screws, the tweezers is used to remove the battery.The use range of the watch back case opener is 15-60mm. 【Five in One Watch Screwdriver】--Five types of screwdriver bits are suitable for many situations: watch battery fixing screws, watch case screws, watch band screws and can also be used forglasses screws.The cover on the end of the screwdriver can be opened and the interior is hollow for storing other screwdriver bits. 【The Purpose of Watch Case Holder】 -- The watch case holder can be used with other tools in the kit to help fix the watch and reduce the risk of slipping and scratching the watch.It is suitable for watches of different sizes and can be used for watches with a diameter of up to 50mm. 【Picture User Manual】-- The kit comes with a user manual.Detailed pictures tell you the correct usage method, avoid damage to your watch by wrong operation, and help you solve the watch problem at home. If you have any questions please contact us promptly